HB-Series Industrial Gear Reducer (B4HV/H2DV/H3DV/H4DV/B2DV/B3DV): Low-Temperature Resistant & Vibration-Damping Grading, Empowering Heavy-Duty Operation in Extreme Temperature Scenarios

I. Product Overview: Low-Temperature Resistant & Vibration-Damping Graded Configuration, Meeting Heavy-Duty Transmission Needs in Extreme Temperature Scenarios

Weigao’s HB-Series Industrial Gear Reducer, covering updated core models B4HV, H2DV, H3DV, H4DV, B2DV and B3DV, is a high-reliability power transmission device specialized in core industrial scenarios requiring low-temperature resistance, vibration damping and heavy-duty operation in extreme temperature difference environments. Based on an upgraded dual-series (DV/DV-B) low-temperature resistant & vibration-damping graded configuration design platform, this series integrates advanced low-temperature adaptive heavy-duty helical gear technology, enhanced vibration-damping structural design, low-temperature resistant material treatment and flexible modular assembly technology, realizing an excellent balance of graded low-temperature vibration-damping adaptation, high torque transmission, stable operation and extreme temperature compatibility. It effectively solves the pain points of traditional reducers such as poor low-temperature toughness, weak vibration resistance, easy failure under extreme temperature difference and difficult matching with heavy-duty equipment in low-temperature vibration scenarios, and can maintain stable and reliable power output in working conditions involving heavy load, continuous operation, frequent impact, ultra-low temperature, large temperature difference and strong vibration. With its low-temperature resistant & vibration-damping graded configuration advantages and stable extreme-temperature performance, it has become a core transmission component in industries such as polar/frigid region mining, low-temperature logistics warehousing, cryogenic equipment auxiliary, high-altitude construction and refrigeration engineering, providing high-reliability power support for heavy-duty industrial production in extreme temperature environments. As an upgraded extreme-temperature heavy-duty transmission product of Weigao, this series has been exported to more than 80 countries and regions around the world, winning wide recognition from global customers with its low-temperature vibration-damping reliability and extreme-environment adaptation value.

II. Core Advantages: Six Core Strengths, Shaping Heavy-Duty Transmission Benchmarks

1. Graded Low-Temperature Vibration-Damping Helical Transmission, Efficient & Stable

Adopting precision-ground low-temperature resistant heavy-duty helical gears with optimized tooth profile, high-toughness modulus design, advanced tooth surface low-temperature carburizing strengthening technology and low-temperature resistant coating treatment, the series achieves meshing accuracy up to GB/T 10095.2 Class 5 standard. The parallel-axis helical transmission structure with reinforced vibration-damping rib, thickened elastic wall and low-temperature sealing optimization design ensures smooth and uniform meshing between gears, reasonable force distribution and minimal transmission vibration, reducing transmission backlash to ≤2.8arcmin. The transmission efficiency reaches 94%-97% for single-stage transmission and 92%-95% for multi-stage transmission, effectively reducing energy loss in long-term heavy-duty operation in low-temperature environments. The fully enclosed integral cast iron housing with integrated low-temperature resistant coating and enhanced heat dissipation fins combines excellent structural rigidity, low-temperature toughness and heat dissipation functions, with operating noise ≤72dB at 1m distance, ensuring stable and durable operation even in ultra-low temperature, large temperature difference and high-vibration harsh working environments.

2. Dual-Series Low-Temperature Resistant & Vibration-Damping Graded Configuration, Precise Extreme-Temperature Heavy-Duty Adaptation

The six core models of the series are divided into DV and DV-B dual low-temperature resistant & vibration-damping series with targeted graded configuration to meet differentiated extreme-temperature heavy-duty transmission needs: DV-series models (H2DV, H3DV, H4DV) are standard low-temperature vibration-damping heavy-duty models, integrating low-temperature resistant material and enhanced vibration-damping structure, suitable for extreme-temperature heavy-duty equipment such as frigid region mining conveyors, low-temperature logistics refrigeration unit conveyors and medium-sized cryogenic equipment auxiliary systems; among them, H2DV is small-medium torque low-temperature model, H3DV/H4DV are large torque low-temperature vibration-damping enhanced models. DV-B-series models (B2DV, B3DV, B4HV) are ultra-heavy load low-temperature resistant & high-vibration-damping enhanced models with reinforced low-temperature resistant shaft, thickened high-toughness gear, high-strength low-temperature bearing and integrated vibration-damping protection design, ideal for ultra-heavy-load extreme-temperature equipment such as polar region mining excavators, high-altitude construction cranes, heavy cryogenic storage tank transfer machinery and ultra-low temperature industrial freezer auxiliary systems. This dual low-temperature resistant & vibration-damping series graded design ensures precise matching of different heavy load levels, low-temperature grades and vibration intensity requirements, further improving equipment operation stability and service life in extreme temperature environments.

3. High Torque Bearing Capacity, Durable Extreme-Temperature Heavy-Duty Operation

Gears and transmission shafts are made of high-strength 42CrNiMoA alloy steel with low-temperature toughening treatment (DV-series) and 34CrNiMo6 ultra-high-strength alloy steel with multi-layer low-temperature heat treatment (DV-B-series), processed through precision forging, low-temperature carburizing, quenching, tempering, precision grinding and low-temperature resistant coating processes (including low-temperature epoxy coating and anti-condensation treatment). The surface hardness reaches HRC 62-65, and the core hardness is HRC 36-40, ensuring excellent wear resistance, impact resistance, low-temperature toughness, fatigue resistance and torque transmission stability even at ultra-low temperatures. The optimized gear modulus, tooth width, shaft diameter and low-temperature vibration-damping structure design for each model ensures that the rated output torque of the series is precisely graded from 1800N·m to 40000N·m (H2DV: 1800-4000N·m; H3DV: 4000-13000N·m; H4DV: 13000-30000N·m; B2DV: 18000-28000N·m; B3DV: 28000-36000N·m; B4HV: 36000-40000N·m). The integral cast iron housing with high rigidity, thickened wall and low-temperature resistant design ensures no brittle fracture or deformation under ultra-heavy load and extreme temperature difference, ensuring a service life of more than 15 years under normal maintenance in extreme-temperature heavy-duty environments.

4. Modular Extreme-Temperature Heavy-Duty Installation, Flexible Layout Adaptation

The series adopts an upgraded extreme-temperature heavy-duty modular design, supporting multiple installation modes such as base-mounted, flange-mounted (B5/B14), torque arm-mounted with vibration-damping pad, shaft-mounted, flange-output mounted and low-temperature resistant mobile base-mounted, which can be flexibly selected according to the diversified layout requirements of extreme-temperature heavy-duty industrial equipment. The output shaft is configured with ultra-heavy-duty low-temperature resistant reliable options such as extra-large-diameter low-temperature resistant solid shaft with flat key, high-strength low-temperature resistant spline solid shaft, extra-large-torque low-temperature resistant hollow shaft with locking disk and low-temperature resistant sleeve-equipped shaft. It can be precisely matched with motors with power ranging from 6kW to 350kW and reduction ratios of 5-400 (single-stage/multi-stage combination). The standardized ultra-heavy-duty interface design with reinforced low-temperature resistant connection parts and anti-condensation protection facilitates quick installation and replacement in low-temperature workshops, polar/frigid region sites and outdoor extreme-temperature environments, reducing construction difficulty and time cost, and adapting to the layout needs of various extreme-temperature core heavy-duty industrial equipment.

5. Enhanced Low-Temperature Sealing & Heat Dissipation, Wide Extreme-Temperature Adaptability

Equipped with a six-layer enhanced low-temperature sealing system composed of heavy-duty low-temperature resistant (-60℃) double-lip oil seal, labyrinth seal with low-temperature resistant coating, high-elasticity low-temperature O-ring, low-temperature resistant sealant, stainless steel dust-proof cover with anti-condensation filter and low-temperature resistant gasket, the reducer achieves IP67 protection level (IP68 can be customized for extreme low-temperature immersion environments). This sealing structure can effectively prevent the intrusion of cold air, frost, ice crystals, dust and moisture in extreme-temperature working environments, avoid oil leakage, internal component freezing and wear, and achieve long-term reliable low-temperature protection. The optimized internal oil circuit design with multi-point lubrication, low-temperature oil filter, oil heater (customizable) and large-area integrated low-temperature heat dissipation fins on the housing ensures sufficient lubrication, impurity filtration, rational temperature control and low-temperature protection of all transmission components during high-load, ultra-low temperature, large temperature difference and high-vibration operation, and the product can work normally in the operating temperature range of -60℃ to +120℃, adapting to most extreme-temperature heavy-duty working conditions such as polar mining sites, frigid region construction sites, low-temperature logistics warehouses, cryogenic equipment workshops and high-altitude extreme-temperature sites.

6. Low-Temperature Convenient Maintenance, Cost-Effective Extreme-Temperature Operation

The modular and ultra-heavy-duty structural design with low-temperature protection makes component disassembly and maintenance more convenient, and the high interchangeability of low-temperature resistant spare parts between the same series reduces maintenance difficulty and time cost in extreme-temperature environments. The centralized and protected extra-large-diameter low-temperature resistant oil filling port, oil drainage port, high-temperature resistant explosion-proof transparent oil level observation window with anti-condensation coating and built-in low-temperature oil filter facilitate daily lubrication management, real-time oil level monitoring, impurity cleaning and low-temperature maintenance. It is recommended to use 220#/320#/460# low-temperature resistant ultra-heavy-duty industrial gear oil (suitable for -60℃ to +120℃), which further enhances the low-temperature fluidity, wear resistance, load-bearing capacity and anti-condensation performance of internal components; the first oil change is after 1000 hours of operation, and regular maintenance and oil change are performed every 4500 hours thereafter for extreme-temperature working conditions. The high reliability, long service life, ultra-strong low-temperature resistant & vibration-damping capacity and durable performance of the product effectively reduce the frequency of maintenance and replacement in extreme-temperature environments, significantly lowering the total operation cost of customers.

III. Application Fields: Extreme-Temperature Heavy-Duty Coverage, Boosting Industrial Production in Frigid & High-Altitude Areas

With its dual low-temperature resistant & vibration-damping series graded configuration, ultra-high torque bearing capacity, extreme-temperature installation adaptation, reliable transmission and wide extreme-temperature adaptability, Weigao’s HB-Series Industrial Gear Reducer (B4HV/H2DV/H3DV/H4DV/B2DV/B3DV models) has been widely applied in various extreme-temperature core heavy-duty industrial fields:

• Polar/Frigid Region Mining: Polar region mineral excavators, frigid region coal mining conveyors, permafrost area mining auxiliary equipment, adapting to ultra-heavy-load, ultra-low temperature (-60℃) and permafrost vibration working environments;
• High-Altitude Construction: High-altitude highway/railway construction cranes, plateau area wind power auxiliary machinery, high-altitude pipeline laying equipment, adapting to heavy-load, large temperature difference and high-vibration working environments;
• Low-Temperature Logistics & Warehousing: Large low-temperature logistics warehouse conveyors, ultra-low temperature freezer auxiliary systems, refrigerated container transfer machinery, adapting to ultra-low temperature, continuous operation and low-vibration working environments;
• Cryogenic Equipment Auxiliary: Cryogenic liquid storage tank transfer systems, LNG terminal loading and unloading auxiliary machinery, cryogenic freezing equipment transmission components, adapting to ultra-low temperature, high-pressure and stable transmission working environments;
• Frigid Region Municipal Engineering: Frigid region sewage treatment plant heavy-duty water pumps, snow removal machinery transmission systems, frigid region heating pipeline auxiliary equipment, adapting to low-temperature, heavy-load, harsh environment and continuous working conditions;

IV. Technical Parameters: Precise Matching, Meeting Diverse Needs

V. Installation and Maintenance: Scientific Operation, Maximizing Performance

During installation, ensure that the coaxiality error between the reducer and the motor is ≤0.12mm to avoid affecting transmission stability, low-temperature performance and ultra-heavy load-bearing capacity. For ultra-heavy-duty, high-vibration and ultra-low temperature environment installation, adopt reinforced concrete installation base with vibration-damping layer, low-temperature resistant coating and high-performance low-temperature vibration-damping pads to reduce vibration impact and prevent base freezing damage. Ensure that all connection parts are fully sealed and low-temperature treated to avoid cold air intrusion and condensation at the connection gaps. Select the appropriate lubricating oil according to the working conditions: use 220# low-temperature resistant ultra-heavy-duty industrial gear oil for ultra-low temperature and medium-heavy load, 320# for normal low temperature and heavy load, and 460# for ultra-high load, high-temperature, large temperature difference and continuous operation. Regularly check the oil level, oil quality, gear meshing status, fastener tightness, heat dissipation fin cleanliness, oil filter blockage and low-temperature coating integrity; replace the lubricating oil after the first 1000 hours of operation, and perform comprehensive maintenance every 4500 hours thereafter for extreme-temperature working conditions, including checking bearing temperature, sealing performance, housing deformation, gear wear and low-temperature toughness status. If abnormal phenomena such as excessive noise, obvious vibration, oil leakage, overheating, torque fluctuation or brittle fracture risk occur during operation, stop the machine immediately for inspection and troubleshooting.

VI. Conclusion: Low-Temperature Resistant & Vibration-Damping Graded Driven, Creating Extreme-Temperature Industrial Transmission Value

Adhering to the design philosophy of "Low-Temperature Resistant & Vibration-Damping Grading, Ultra-Heavy-Duty Reliability, Extreme-Temperature Adaptation and Stability", Weigao’s HB-Series Industrial Gear Reducer (B4HV/H2DV/H3DV/H4DV/B2DV/B3DV models) focuses on the stable and efficient transmission needs of extreme-temperature core heavy-duty industrial fields, and continuously optimizes product structure and low-temperature vibration-damping technology. Whether in low-temperature heavy-duty transmission, ultra-heavy load extreme-temperature operation or complex large temperature difference scenarios, this series can provide stable, efficient and durable power transmission solutions for customers with its dual low-temperature resistant & vibration-damping series graded configuration, ultra-high torque bearing capacity and extreme-temperature adaptation advantages, helping to improve production stability and efficiency of extreme-temperature core industrial equipment. We will continue to focus on the research and development of low-temperature resistant & vibration-damping heavy-duty transmission technology, deeply explore the needs of different extreme-temperature heavy-duty industrial fields, provide customized product solutions and global after-sales service support, and work with global customers to build a more reliable and efficient extreme-temperature core industrial production system. All export products of this series have passed international certifications such as ROHS, CE, ISO9001 and low-temperature resistance certification (IEC 60076-14), fully complying with the technical standards and safety requirements of various countries and regions for extreme-temperature equipment, ensuring smooth application in global extreme-temperature heavy-duty industrial markets.

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